FR2602465A1 - BEARING SURFACE PROFILE ON TIRES OF VEHICLES - Google Patents

Abstract

THE PRESENT INVENTION CONCERNS A TRACKING SURFACE PROFILE FOR VEHICLE TIRES OF THE RADIAL CARCASE TYPE AND BELT-SHAPED REINFORCEMENT, WHICH CONSISTS OF A CENTRAL RIB 2 ORIENTED IN A PERIPHERAL DIRECTION AND HAVING A ZIG-ZAG SHAPE, AND OF PROFILE BLOCKS SEPARATED IN A PERIPHERAL DIRECTION BY LATERAL CHANNELS 5, 6 AND ARRANGED IN THE SHAPE OF S, IN PAIRS DIAGONALLY ON THE WIDTH L OF THE BEARING SURFACE, THESE BLOCKS BEING DIVIDED BY LONGITUDINAL CHANNELS 7, 8 ORIENTED IN A PERIPHERAL DIRECTION. IT IS CHARACTERIZED IN THAT A THREE-PART TRACKING SURFACE PROFILE 1 IS OBTAINED, IN WHICH THE PAIRS OF S-SHAPED BLOCKS 3, 4; 3, 4 CONSIST OF A CENTRAL BLOCK Q CONNECTED WITH THE RIB 2 AND A SHOULDER BLOCK S.

Description

The present invention relates to a rolling surface profile for

  vehicle tires of a radial-carcass type with belt-like reinforcement. According to a first variant, the profile consists of a rib arranged in the center, oriented in the circumferential direction and in the form of a zig-zag, as well as several profile blocks separated in the peripheral direction by lateral channels and which are arranged 10 and arranged so that associated in pairs and diagonally, considering the width of the running surface, they each appear as an S-shaped block. On each side of the rib, channels

  longitudinals are oriented in a peripheral direction and are connected to said lateral channels.

  Known rolling surface profiles of this kind have good adhesion and stability of walking in a straight line, they are well suited to

  evacuate the water and they are quiet to rolling.

  The layout and layout of the ribs and blocks are necessarily a compromise solution

  in relation to all the properties of the profiles.

  Thus, depending on the requirements, one and / or the other property will be preferred and the profile will thus be designed in a specific but selectable manner.

  Because, for example, in the automobile industry, vehicles with an increasingly low coefficient of air resistance, called the coefficient Cw, are increasingly being designed and moreover with engines that are increasingly operating. silently, the noise in operation depends more and more on the rolling noise of the tires. On the other hand, legislators in some countries will tend in the future to

  more allow in the road traffic vehicles producing a lot of noise.

  Assuming that the vehicle tire should produce only a slight noise while running, the object of the invention is to create a rolling surface profile taking into account the requirement of noise reduction. However, simultaneously

  The wet rolling properties, which are important for safety, must also be taken into consideration.

  This technical problem is solved by means of a rolling surface profile divided into three parts and in which the S-shaped block pairs consist of central blocks Q, which are connected to the right and to the left directly. at the central rib and which are separated from the latter only by a shallow and narrow air discharge groove, and are further composed of shoulder blocks S more or less wide. A central block and a shoulder block are divided by a deep part of the longitudinal channel

the peripheral channel.

  The blocks of the profile are oriented axially on the side-shoulder, their edges making an angle of 90 to 80 - measured with respect to the median plane x + x. The central blocks are oriented peripherally on the central rib, their edges forming an angle X

  from 35 to 55 - measured in relation to the median plane x + x.

  Moreover, the blocks are arranged in a continuous curve

or in polygonal form.

  The mutually associated central block and shoulder block are divided by the longitudinal channel portion of the wide peripheral channel, which is

  angle 'from 0 to 65 - measured in relation to the plane x + x.

  The transverse channel part of the peripheral channel

  is connected to the axially oriented side channel.

  The central rib widened left and right 35 by the central blocks Q of peripheral orientation, in this case a width between 25 and 40% of the width of the running surface. The profile block

  is provided with thin notches forming lamellae, which are oriented substantially parallel to the lateral channel.

  Each thin notch forming lamella is connected to at least one groove or channel. On the shoulder side, the profile blocks are

  delimited by a peripheral decoupling rib.

  By the combination of profile blocks having an S shape and which are divided by a rib which is widened diagonally by the central blocks, and by a set of wide longitudinal channels and side channels provided with parallel fine notches

  defining slats and venting air into the grooves, a rolling surface profile 15 is obtained which produces relatively little noise.

  In addition, this rolling surface profile, due to the wide curved lateral channels, which are connected to the wide peripheral channels arranged

  advantageously with offset, has a good ability to evacuate water.

  This property can be further improved when the central rib additionally has a central groove. This property and stability in a straight line can be further enhanced by longitudinal grooves, which divide the shoulder block

S into two block portions S1, S2.

  An improvement in the noise reduction can furthermore be obtained by constructive measures of offset of the edges of the profile. An offset in the diagonal orientation of the S may be provided. An offset in the peripheral distribution may be provided in which the blocks of the profile deviate from the distribution width, considering the direction from the outer side to the side inside the pneuma35 tick. It is possible to provide narrower and wider profile blocks. In addition, the groove edges may be offset in the direction of overlap. These improvements and others will be explained

  using exemplary embodiments.

  According to a second variant of the subject of the present invention, the profile consists essentially of profile blocks arranged diagonally in S-shaped pairs over the width of the running surface and which are interrupted, in the middle of the running surface, by a rectilinear rib disposed in a peripheral direction. On either side of the rib are longitudinal channels oriented in a peripheral direction and to which channels are connected.

  lateral dividing the profile blocks.

  These rolling surface profiles, which are provided with S-shaped elements, have a good adhesion, a good running stability in

  straight line and good evacuation ability.

  With regard to walking silence, straight-line stability and rail tracking prevention, they

can still be improved.

  The object of the invention was precisely to create a rolling surface profile based on the principle of noise reduction, but at the same time taking into account the wet rolling properties, the straight running stability and the damping stability. impediment

track tracking.

  This technical problem can be solved using a tread surface profile divided into three parts, in which the S-shaped diagonal pairs of blocks arranged in a curved or polygonal shape are divided by a rib. central with central groove of rectilinear shape, this central rib being respectively connected to the left and right 35 with central blocks which extend with a peripheral orientation. The central blocks are separated from the shoulder blocks by rectilinear longitudinal channels. The central blocks are separated from the rib simply by deaeration grooves which have a shallow depth and a small width compared to the longitudinal and lateral channels which are deep. The shoulder blocks of the pair of S-shaped blocks are disposed axially in the region of the shoulder and the center blocks of the pair of S-shaped blocks are arranged with a plurality of S-shaped blocks.

  Peripheral orientation in the rib zone.

  The angle V <in the shoulder zone is between 90 and 80 and the angle p in the rib zone is between 35 and 55, these angles being respectively measured with respect to the median plane of

pneumatic x + x.

  These profile blocks are provided with thin lamella-forming notches which are oriented parallel to the curved or poly-gonal side channels. These notches evacuate the air respectively

  at least in a longitudinal channel or in a groove.

  On the side of the shoulder, the S-shaped profile blocks are delimited by a decoupling groove with respect to the decorative blocks located at the beginning of the blank. By combining, on the width LB of the running surface, S-shaped block pairs with a rectilinear dividing rib associated with a rectilinear groove and the central blocks directly connected to this rib and which are separated from the dotted blocks. shoulder by straight channels of discharge of water on the periphery, the slats of the profile can be deaerated by grooves, one obtains a rolling surface profile which produces little noise, which is very capable of evacuating the water, which is stable when running in a straight line and is insensitive to

a rail tracking effect.

  In this variant also, these properties can be optimized from one case to another, when additional grooves are provided in the shoulder blocks or when another division of the shoulder block is made into a shoulder block. longer extending to the decoration block and an additional Z block. Improvements are furthermore

  possible by means of the offset of the edges of the blocks and the grooves.

  Other features and advantages of the invention will be highlighted later in the

  description, given by way of non-limiting example, in

  1 is a partial elevational view of a first embodiment of the rolling surface profile in accordance with the invention; FIG. 2 is a partial elevational view of an embodiment variant of the profile, - Figures 3, 4 are partial elevational views of details of the profile, - Figure 5 is a partial elevational view of another modified embodiment, - Figure 6 is a view. In partial elevation of another embodiment of the profile, - Figures 7 to 10 are partial elevational views of details of the profile, - Figure 11 is a partial elevational view of another variant, - Figure 12 is a side elevational view of another variant of the rolling surface profile according to the invention; FIG. 13 is a side elevational view of a completed embodiment of this profile, FIG.in side elevation of an alternative embodiment of this profile, and - Figure 15 is a side elevational view.

another profile realization.

  The running surface 1 of FIG. 1 essentially consists of a zig-zag central rib 2 located in a peripheral direction in the median plane x + x of the tire, profile blocks 3, 4, 3 ', 4', which create in pairs on the width LB

  of the running surface an S shape of the profile.

  The profile blocks 3, 3 'lying in one half 1 of the running surface are separated from one another in a circumferential direction by lateral channels 5, while the profile blocks 4, 4' situated in the other half r of the running surface

  are separated from each other in a peripheral direction by lateral channels 6.

  The channels 5, 6 are shown here with a curved profile. On the contrary, they can also have a polygonal profile. Each profile block extends from the shoulder Ls of the running surface to the rib 2 and is produced by being divided

in essence in three parts.

  Due to this division into three parts, shoulder blocks 25 and an enlarged rib around the central blocks Q are obtained on the right and left. In accordance with FIG. 2, a division of the shoulder blocks is provided. . This division is established by the narrow longitudinal groove 11. The width

  up to 3 mm. The depth is low.

  It is at most 3.5 to 4.0 mm in comparison with the deep peripheral canal. The longitudinal groove 11 constitutes a means for dividing the shoulder block and an auxiliary air evacuation for the fine notches

forming lamellae.

  The central block Q is connected to the rib 2 and it is only separated from it, in an upper radial zone of the profile, by an evacuation groove

  12. The groove 12 is shallow and not wide.

  The depth is about 3.5 to 4.0 mm and the width is about 2.5 to 3.0 mm. 1 is a shift of the blocks -Q diagonally. The central block Q is separated from the shoulder block S by a deep and wide water discharge channel 7, 8. The channel is made with a zig-zag profile and it is continuous in a

  Peripheral direction. The channel portion 7a, 8a is oriented substantially parallel to the rib 2.

  It is inclined at an angle Y of about 45. The curved channel portion 7b, 8b has a profile that continuously joins the curved side channel 5, 6. These channels have a depth of about 7 to 8 mm and a width of about 5 to 6 mm. The radius R of the block walls in the area of the block portion S1 is greater than the radius r of the block walls in the area of the block portion S2 and the center block Q. Thus, a shape of S which begins approximately axially on the edge of the running surface and growing strongly to the middle. The edges of the shoulder-side end of the block portion S1 make an angle - measured with respect to the tire median plane x + x - of 90 to 80, of

preferably 85.

  On the other hand, the edges of the rib-side end of the central block Q make an angle p - measured with respect to the

  median plane of tire x + x - from 35 to 55, preferably 45.

  The decorative block D is separated from the epoxy block 3, 3 ', 4, 4' by a decoupling groove 9, 10.

  Both these grooves and the decorative blocks are located in a transition zone between the shoulder of the tire and the blank (not shown). The decoupling groove and the decorative blocks are shown in FIGS. 1, 2 in fold-down in the plane of the

running surface.

  On the width LB of the running surface, due to the arrangement of the shoulder blocks and the rib to which the central blocks are connected, the profile is divided into three parts. The middle or middle part m has a width corresponding to about 25% to 40% of the width LB of the running surface. In this respect, the zigzag peripheral channel 7, 8 is arranged in overlap. The overlap area is designated z. It can have a dimension between 0.5 times and 2.0 times the width

of channel 7, 8.

  Another overlap exists in the groove 11 of the shoulder block S in accordance with FIG. 2. This overlap area is designated 14. It may be between 1.0 times and 5.0 times the width of the groove 11 The length f of the block portion S2 is between about 0.15 and 0.35 times the length

e of block S1.

  In addition, the blocks S and Q are provided with thin slotted shafts 13. In essence, these slats are oriented parallel to the edges of the curved blocks and are adapted thereto accordingly. The lamellae open at least in one

  existing channels 7 or 8 or in an air discharge interruption groove 11 or 12.

  The profile blocks 3, 3 ', 4, 4' are distributed, in the circumferential direction of the tire, according to a determined but nevertheless selectable step d. In this respect, there may be an offset of the blocks of foam - considering the direction from the inner side to the outer side of the tire, refer in this respect to the diametrical points v and w. The offset u can correspond up to 0.2 times the value of the step of

distribution of blocks.

  Another embodiment having a differently arranged rolling surface is in FIG. 3. In this case, the rib 15 is provided with inclined grooves 16, through which the rib is divided into portions of blocks 17. Also, these grooves

  inclined 16 are provided with the same depth and width as the air discharge grooves 12.

  In accordance with Figure 4, other means are provided. The S and Q blocks have thin lamella-shaped notches 48, which are enlarged towards the mouth by enlarged notches 47. In an area outside the bearing surface, the lateral channels 45 are widened in the zone 46, in particular being provided with a funnel shape. Instead of the rib 42, it is also possible to provide

  rib 22 having a central groove 23.

  These means serve to reduce the noise.

  The widening of the lateral canal promotes resistance to aquaplaning. The embodiment of Figure 5 performs the same function with other means. The center rib 52 is associated with lamellar blocks Q. The lamellar shoulder blocks S can be provided without modification with the longitudinal groove 51 or the blocks S '. It is essential that the peripheral channels 57 and 58 be oriented substantially parallel to the median plane x + x. In addition, the longitudinal grooves 51 may also have a

parallel orientation.

  Another embodiment of the tread surface profile is shown in FIG. 6. In this case, the rib 22 is slightly enlarged and has a narrow central rib 23. The width of the groove 23 is about 3 mm. . The depth is about 4 mm. The groove overlap is about 0.5 times the width of the groove 11 23. The air discharge grooves 12 and the grooves

longitudinal 11 are preserved.

  A modification of the central groove provided in the central rib 32 is indicated in FIG. 7. The central groove 33 here has an amplitude that is greater than the amplitude 31 of the zig-zag rib. Thus, insensitivity to rail tracking is increased. The angle 6 of the rib in zig-sag rises

  at around 100. On the other hand, the range of angle θ may be between 30 and 120.

  All zig-zag center grooves can also be ventilated. In Figure 8, the central groove 23 provided on the central zig-zag rib 22 is ventilated by oblique ventilation grooves 24. These grooves have a width and a depth similar to those of the grooves 12, which

  separate the central block Q of the rib.

  The rib 22 having the central groove 23 may additionally be provided with thin slit forming notches. In accordance with Figure 9, the slats are designated 27. They discharge their air at the central groove 23. In Figure 10, the slats are designated by

  28. They discharge their air towards the outer edge 25 of the rib.

  In order to increase insensitivity to rail tracking, there is further provided in accordance with FIG. 10 alternatively short shoulder blocks of length E 'and long shoulder blocks of length E. edges, that he is besides

  also possible to achieve by overlapping.

  According to Figure 10, the side channels 25 are funnel-shaped widened in the - 12 direction of the shoulder Ls, as indicated at 26. In this way, the resistance to aquaplaning and noise reduction

  are further improved. Thanks to the other thin slit forming notches 27, 28 which are provided by the rib 22, it is possible to further improve the noise reduction and the central wear resistance.

  The additional means shown in Figures 4 and 8 to 10 also serve to improve noise reduction and aquaplaning resistance.

  Another arrangement of the rolling surface profile is shown in Figure 11, where the peripheral grooves 18, 19 are oriented relatively parallel to the x-x plane and the grooves 21 are obliquely oriented. These measurements are also possible for reasons of optimization of the noise reduction.

  and resistance to aquaplaning.

  The running surface 101 of FIG. 12 essentially consists of a central rectilinear rib 102, which is provided with a central rectilinear groove 103, and pairs of S-shaped blocks 104 and 105 extending on the width LB of the running surface. These pairs of blocks are each divided into a shoulder block S and a center block Q. The shoulder block S is oriented axially from the shoulder-side, the edges preferably being oriented at an angle α.degree. The central block Q is connected to the rib 102 and is separated therefrom simply by a deaeration rib 112 of shallow depth and small width. The central block Q is connected to the rib with peripheral orientation, the angle B being between

  and 55.

  The pairs of S-shaped blocks are separated on each side of the rib by longitudinal channels.

- 13

  dinals 106, 107 oriented in a peripheral direction.

  These channels are connected with the side channels 108, 109

curved or polygonal profile.

  The shoulder and central blocks S, Q comprise several fine notches and parallel strips 113, which are oriented substantially parallel to the side channels 108, 109. These notches are deaerated in the longitudinal channels 106, 107 or in the

deaeration grooves 112.

  The profile existing in the middle of the running surface and consisting of the rib and the central blocks has a size of between about 25 and% of the width LB. On the sides LD of the shoulder, the profile is separated from the decorative blocks D by decoupling grooves 110, 111. In the drawing, these decoupling grooves and the decoration blocks are shown folded in the plane of the surface of the rolling. The pitch of the profile elements is designated d. It can be provided between diametrical points v, w, considering the width of the running surface, an offset of blocks u in a peripheral direction, this offset having a value that can reach

0.2 times the step size d.

  The running surface 120 of FIG. 13 essentially corresponds to the running surface of

  Figure 1 and here the rib is designated 122, the groove 123 and the deaeration grooves 128.

  The shoulder blocks S are additionally provided with a substantially rectilinear groove

  This groove is shallower and less wide.

  It serves to further deaerate thin slots between lamellae 113 and has advantages - 14 in terms of insensitivity to a track tracking trend. The rib 121 divides the block S into block portions S ', S ". The corresponding shoulder block 125, 125 of the pair of S-shaped blocks 5 is separated from the central block Q connected to the rib by longitudinal channels. 126, 127. Each central block Q is separated from the rib by a deaeration groove 128 of small width and shallow depth.The rolling surface of Figure 14 has a different disposition of the longitudinal groove provided in the block. This groove is indicated by 131. It is arranged with an oblique orientation and may comprise an overlap 135 corresponding to 1 to 5 times the width of the groove.The rib 132 comprising the rectilinear groove 133 is also provided with central blocks Q directly connected to this rib and with peripheral orientation, the groove 131 divides the shoulder block 20 in part from the block S1 and S2, the longitudinal channels, which have a rectilinear profile and i separate the shoulder block S from the central block Q, are designated by

136 and 137.

  The running surface of FIG. 15 is modified with respect to the profile of FIGS. 12 to 14. The corresponding shoulder block SD is extended to the decor (which no longer exists). The blocks of the block pair in FIG. S-shaped 144, 145 are composed of the extended shoulder block SD, the central block Q connected directly to the rib 142 having a rectilinear groove 143, and the

  additional block 148 placed in an intermediate position.

  This block is separated from the shoulder block SD by the enlarged groove 141. It is further separated from the central block Q by the longitudinal channel 146, 147. This additional block is also adapted to the curved or polygonal profile of the block. shoulder and central block. All SD, Z, Q blocks of the S-shaped pair of blocks are provided with fine notches 113 defining lamellae, which are oriented substantially parallel to the lateral channels of the profile. - 16

Claims (32)

  1.- tread surface profile for vehicle tires of the radial carcass type and belt-like reinforcement, which consists of a central rib (2) oriented in a circumferential direction and having a zig-zag shape, and profile blocks separated in a circumferential direction by lateral channels (5, 6) and arranged S-shaped, in pairs diagonally across the width (LB) of the running surface, these blocks being divided by longitudinal channels (7, 8) oriented in a peripheral direction, characterized in that a three-part rolling surface profile (1) is obtained, in which the S-shaped block pairs (3, 4; 3 ', 4 ') consist of a central block (Q) connected with the rib (2, 22) and which is separated from the rib by ventilation grooves (12) of shallow depth and small width, and of a block of shoulder (S), which is divided by a longitudinal channel portion (7a, 8a) of the longitudinal channel udinal (7, 8) and which are arranged such that the shoulder block (S) is axially oriented, shoulder-side, at an angle a = 90 to 80 measured relative to the median plane of tire x + x and the central block (Q) is peripherally oriented on the rib side at an angle B = 35 to 55 measured with respect to the median plane of tire x - x, and the intermediate block portions are arranged in a curved or polygonal shape the side channel (5, 6) being connected to the transverse channel portion (7b, 8b) of the longitudinal channel (7, 8) and the longitudinal channel portion (7a, 8a) being disposed with a peripheral orientation - 17 according to an angle y = 0 to 65, in that the profile has in the middle (m) a width of 25% to 40% of the width (LB) of the running surface, in that the profile blocks (S) are delimited on the shoulder-side by a decoupling groove (9, 10) oriented in a zig-zag-shaped direction in a peripheral direction and separating the profile block (S) from the decorative block (D) disposed in the shoulder of the tire in the form of an extension of the S-shaped block pair, and that the profile blocks (Q, S, D) are provided with thin lamella-shaped notches (13) oriented parallel to the lateral channel (5, 6) and the channel portion (7b, 8b) and which are each connected to each other.   with at least one longitudinal channel or groove portion (7, 8, 9, 10, 12).   2.- tread surface profile according to claim 1, characterized in that the shoulder block (S) comprises a longitudinal groove   (11) of shallow depth and small width, which divides the block into block portions (S1, S2).   3. Surface profile according to one of claims 1 or 2, characterized in that   the rib (2, 15) is provided with additional grooves (16) connecting the ventilation grooves (12).   4.- Running surface profile according to   any one of claims 1 to 3, characterized in that the rib (2, 22) has a central zig-zag groove (23).   5. Surface profile according to claim 4, characterized in that the angle (6) of the zig-zag profile of the groove is between and 120. - 18   6. Surface profile according to one of claims 4 and 5, characterized in that   the rib (22) and the groove (23) have edges oriented parallel.   7.- Running surface profile according to   one of claims 4 to 6, characterized in that   the central groove (33) has a different amplitude (30)   the amplitude (31) of the rib (32).   8. Surface profile according to any one of claims 4 to 7, characterized   in that the central groove (23, 33) has a groove overlap (y) which is between 0.1 and 3 times the groove width.   9. Surface profile according to one of Claims 4 to 8, characterized   in that the central groove (23, 33) has   lateral ventilation grooves (24).   10. Surface profile according to any one of claims 1 to 9, characterized in that the longitudinal channel (7, 8) oriented in a   peripheral direction has a groove overlap (z) between 0.5 and 2 times the width of the longitudinal channel.   11. Surface profile according to any one of claims 1 to 10, characterized   in that the shoulder block groove (11) has a groove overlap (14) between 1 and 1 times the groove width.   12. Surface profile according to one of Claims 1 to 11, characterized   in that the shoulder blocks (S) which are successively arranged in a peripheral direction have   alternatively different lengths of blocks (E, E '). - 19   13. Surface tread profile according to any one of claims 1 to 12, characterized in that the profile blocks (S) of the two shells of the running surface comprise, in dia-metrical points (v, w) a block offset (u) corresponding to   0 to 0.2 times the width of the distribution step (d) of the blocks.   14. Surface profile according to one of Claims 1 to 13, characterized in that the side channels (25) are widened (26) in   shoulder side direction (Ls).   15.- tread surface profile according to any one of claims 1 to 14, characterized   in that the side channels (45) are additionally funnel-shaped widened (46) outside the bearing surface.   16.- tread surface profile according to any one of claims 1 to 15, characterized in that the rib (22) comprises thin notches of   forming slats (27) which are connected to the groove central (23).   17.- tread surface profile according to any one of claims 1 to 16, characterized in that the rib (22) comprises thin notches of   forming slats (28) which are connected to the groove ventilation (12).   18.- tread surface profile according to any one of claims 1 to 17, characterized   in that the thin slotted forming notches (48) provided in the block (Q, S) each comprise an enlargement of the mouth (47).   19.- tread surface profile according to any one of claims 1 to 18, characterized   In that the longitudinal channels (18, 19, 57, 58) are oriented parallel to the median plane of the tire (x + x).   20.- Running surface profile according to   any one of claims 1 to 19, characterized   in that the longitudinal grooves (51) are oriented   parallel to the median plane of tire (x. x).   21. A tread surface profile for radial belt-type vehicle tires with belt-like reinforcement, which consists of a straight rib (102) disposed in the middle and oriented in a circumferential direction and profile blocks. arranged diagonally in pairs across the width (LB) of the running surface and separated in a circumferential direction by side channels (108, 109), further divided by longitudinal channels (106, 107) oriented in a circumferential direction, characterized in that a tread surface profile (101) divided into three parts, in which the S-shaped block pairs (104, 105) consist of a central block (Q), connected to the rib (102) and which is separated from this rib by deaeration grooves (112) of shallow depth and width, and of a shoulder block (S), which are respectively divided 25 by part of the canal longit udinal (106, 107) and which are arranged such that the shoulder block (S) is axially oriented, the side-shoulder, an angle a = 90 to 80 - measured relative to the median plane of tire xx and the central block (Q) is peripherally oriented, at the rib-side, at an angle (B) = 35 to 55 - measured with respect to the tire plane x - x, and the block portions placed at intermediate positions are adapted with a curved or polygonal profile, in that the central part (m) of the profile has a width of between 25% and 40% of the width (LB) of the running surface, in that the rib ( 102) comprises a continuous circumferential groove (103), in that the profile blocks (S, Q) are provided with thin lamella forming notches (113) oriented parallel to the side channels (108, 109) and each connected to the least with a longitudinal canal part or part of groove (106, 107, 110, 111, 112).   22.- tread surface profile according to claim 21, characterized in that the shoulder block (S) comprises a longitudinal groove (121) of shallow depth and small width, which divides the   block in block portions (S1, S2; S ', S ").   23.- tread surface profile according to claim 22, characterized in that the longitudinal groove (121) is rectilinear and is oriented in a Peripheral direction.   24. A tread surface profile according to claim 22, characterized in that the longitudinal groove (131) is disposed obliquely.   25.- Surface profile according to any one of claims 21 to 24, characterized   in that the S-shaped block pairs (144, 145) comprise a shoulder block (SD) extended to the decor (D) and another block (Z) disposed between the aforementioned block and the block of rib (Q) and which is separated from the block (SD) by the rib (141) and from the block (Q) by the longitudinal channel (146, 147).   26.- Running surface profile according to   Claim 25, characterized in that the block (Z) has thin lamella-forming notches (113).   - 22 27.- Running surface profile according to   Claim 25, characterized in that the longitudinal groove (141) is arranged as a longitudinal channel.   Rolling surface profile according to Claim 24, characterized in that the groove (131) has an overlap (135) of between 1 and 5 times the groove width.   29.- tread surface profile according to any one of claims 21 to 28, characterized in that the profile blocks (S, SD, ...) of the two halves of the running surface comprise, at points diametric (v, w) a block offset (u) between 0   and 0.2 times the width of the distribution step (d) of the blocks.   30.- tread surface profile according to any one of claims 21 to 29, characterized   in that the shoulder blocks succeeding one another in a peripheral direction have different lengths after every fourth block.   31. A tread surface profile according to any one of claims 21 to 29, characterized   in that the shoulder blocks, which succeed one another in a peripheral direction, have lengths which are alternatively different.   32.- Surface profile according to any one of claims 21 to 31, characterized   in that the lateral channels (108, 109) are enlarged by side of the shoulder (LD).   33. A tread surface profile according to any one of claims 21 to 32, characterized in that the lateral channels (108, 109) are arranged in   funnel shape outside the bearing surface.